442022240 has 48 divisors (see below), whose sum is σ = 1139216400. Its totient is φ = 160734720.

The previous prime is 442022237. The next prime is 442022293. The reversal of 442022240 is 42220244.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123815 + ... + 127334.

It is an arithmetic number, because the mean of its divisors is an integer number (23733675).

Almost surely, 2^442022240 is an apocalyptic number.

442022240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442022240 is an abundant number, since it is smaller than the sum of its proper divisors (697194160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442022240 is a wasteful number, since it uses less digits than its factorization.

442022240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251175 (or 251167 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 442022240 is about 21024.3249594369. The cubic root of 442022240 is about 761.7539362062.

Adding to 442022240 its reverse (42220244), we get a palindrome (484242484).

The spelling of 442022240 in words is "four hundred forty-two million, twenty-two thousand, two hundred forty".